| Melanthiaceae | |
Helonias alpina
| (F.T. Wang & Tang) N. Tanaka | J. Jap. Bot. 73(2): 106 | 1998 |
| Melanthiaceae | |
Helonias angustifolia
| Michx. | Fl. Bor.-Amer. 1: 212–213 | 1803 |
| Melanthiaceae | * |
Helonias angustifolia
| Nutt. | Trans. Amer. Philos. Soc. n.s., 5: 154 | 1835 |
| Melanthiaceae | |
Helonias anthericoides
| Hoppe ex Schult. & Schult. f. | Syst. Veg. (ed. 15 bis) 7(2): 1575 | 1830 |
| Melanthiaceae | |
Helonias asphodeloides
| L. | Sp. Pl. (ed. 2) 1: 485 | 1762 |
| Melanthiaceae | |
Helonias borealis
| Willd. | Sp. Pl. 2: 274 | 1799 |
| Melanthiaceae | |
Helonias bracteata
| Sims | Bot. Mag. 41: pl. 1703 | 1815 |
| Melanthiaceae | |
Helonias breviscapa
| (Maxim.) N. Tanaka | J. Jap. Bot. 73: 111 | 1998 |
| Melanthiaceae | |
Helonias bullata
| L. | Sp. Pl. 1: 342 | 1753 |
| Melanthiaceae | |
Helonias dioica
| (Walter) Pursh | Fl. Amer. Sept. 1: 243 | 1814 [1813] |
| Melanthiaceae | |
Helonias dubia
| Michx. | Fl. Bor.-Amer. 1: 213 | 1803 |
| Melanthiaceae | |
Helonias erythrosperma
| Michx. | Fl. Bor.-Amer. 1: 212 | 1803 |
| Melanthiaceae | |
Helonias glaberrima
| Sims | Bot. Mag. 40: pl. 1680 | 1814 |
| Melanthiaceae | |
Helonias graminea
| Ker Gawl. | Bot. Mag. 39: pl. 1599 | 1813 |
| Melanthiaceae | * |
Helonias graminea
| Elliott | Sketch Bot. S. Carolina 1: 423 | 1817 |
| Melanthiaceae | |
Helonias guineensis
| Thonn. | Beskr. Guin. Pl. 202 | 1827 |
| Melanthiaceae | |
Helonias japonica
| (Willd.) Schult. & Schult. f. | Syst. Veg. (ed. 15 bis) 7(2): 1567 | 1830 |
| Melanthiaceae | |
Helonias jinpingensis
| (W.H. Chen, Y.M. Shui & Z.Y. Yu) N. Tanaka | J. Jap. Bot. 84: 190 | 2009 |
| Melanthiaceae | |
Helonias kawanoi
| N. Tanaka | J. Jap. Bot. 73: 109 | 1998 |
| Melanthiaceae | |
Helonias laeta
| (Aiton) Ker Gawl. | Bot. Mag. 21: pl. 803 | 1805 |
| Melanthiaceae | |
Helonias lanceolata
| Sims | Bot. Mag. 30: t. 747 | 1804 |
| Melanthiaceae | ** |
Helonias latifolia
| Michx. | Fl. Bor.-Amer. 1: 212 | 1803 |
| Melanthiaceae | |
Helonias leucantha
| (Koidz.) N. Tanaka | J. Jap. Bot. 73: 107 | 1998 |
| Melanthiaceae | |
Helonias lutea
| (L.) Ker Gawl. | Bot. Mag. 27: t. 1062 | 1807 |
| Melanthiaceae | |
Helonias minuta
| L. | Mant. Pl. 225 | 1771 |
| Melanthiaceae | |
Helonias nigra
| (L.) Ker Gawl. | J. Sci. Arts (London) 1: 184 | 1816 |
| Melanthiaceae | |
Helonias officinalis
| (Schltdl. & Cham.) D. Don | 13: 234 | 1832 |
| Melanthiaceae | |
Helonias orientalis
| (Thunb.) N. Tanaka | J. Jap. Bot. 73: 109 | 1998 |
| Melanthiaceae | |
Helonias paniculata
| Nutt. | J. Acad. Nat. Sci. Philadelphia 7(1): 57 | 1834 |
| Melanthiaceae | |
Helonias pumila
| Jacq. | Collectanea 2: 260 | 1789 |
| Melanthiaceae | |
Helonias scapigera
| Stokes | Bot. Mat. Med. 2: 333 | 1812 |
| Melanthiaceae | |
Helonias striata
| Raf. | Atlantic J. 147 | 1833 |
| Melanthiaceae | |
Helonias tenax
| Pursh | Fl. Amer. Sept. 1: 243, pl. 9 | 1814 [1813] |
| Melanthiaceae | |
Helonias tenuifolia
| Salisb. | Prodr. Stirp. Chap. Allerton 250 | 1796 |
| Melanthiaceae | |
Helonias thibetica
| (Franch.) N. Tanaka | J. Jap. Bot. 73(2): 106 | 1998 |
| Melanthiaceae | |
Helonias tomentosa
| Muhl. ex Schult. & Schult. f. | Syst. Veg. (ed. 15 bis) 7(1): 282 | 1829 |
| Melanthiaceae | |
Helonias umbellata
| (Baker) N. Tanaka | J. Jap. Bot. 73(2): 108 | 1998 |
| Melanthiaceae | |
Helonias virescens
| Kunth | Nov. Gen. Sp. (quarto ed.) 1: 267–268 | 1815 [1816] |
| Melanthiaceae | |
Helonias virginica
| (L.) Sims | Bot. Mag. 25: sub pl. 985 | 1807 |
| Melanthiaceae | |
Helonias viridis
| (Aiton) Ker Gawl. | Bot. Mag. 27: sub pl. 1096 | 1808 |
| Melanthiaceae | |
Helonias yunnanensis
| (W.W. Sm. & Jeffrey) N. Tanaka | J. Jap. Bot. 73(2): 105–106 | 1998 |